1901,6.4,7.3,9.7,10.9,12.4,12.9,12.7,11.6,13,12.1,9.9,6.4
1902,6.6,7.4,10.5,12,13.5,13.5,12.6,12.3,12.9,11.2,9.8,6.9
1903,6.3,7.7,8.7,10.6,11.8,12.6,12.3,11.7,12.1,10,7.7,5.4
1904,5.8,8.5,10.7,11.7,11.9,13,11.7,11.6,12.3,10.3,7.7,6.4
1905,5.6,5.2,9.4,10.7,12.9,12.7,12.3,12.7,12.2,10.4,8.2,4.5
1906,5.9,7.4,9,11.1,12.3,13.2,12.2,11.6,12.3,10.2,7.9,6.7
1907,7.5,7.6,10.4,11.1,12,12.9,11.9,11.9,12.6,10.9,7.5,6.4
1908,6.4,7.2,10,11.2,12.9,13.5,12,11.9,11.9,10.1,7.7,6.6
1909,6.7,7.6,10.4,11,13.1,13.1,12.2,11.5,11.5,9.8,8.6,5.2
1910,5.7,6.2,8.4,10.2,11.9,12.4,11.8,11.7,11.6,9.6,7.7,5.5
1911,6.7,7.4,9.2,10.7,10.7,12.6,11.5,12,12.6,10.2,7,5.8
1912,5.9,6,8.8,11.2,12.5,11.8,11.7,11.9,12,10.4,6.7,5.7
1913,6.1,6.9,8.7,9.4,11.3,11.5,11.6,12,11.4,9.9,7.8,5.7
1914,6.4,6.7,7.9,10.1,11.6,11.7,11.6,11.5,11.7,10.4,7.4,5.1
1915,5.6,6.9,7.8,9.9,12.7,13.3,12.3,12.1,12,10.3,7.7,6.4
1916,7.5,7.5,9.7,10.6,12,12.9,11.6,11.1,11.3,9.4,6.4,5.4
1917,5.3,6.2,8.1,9.1,11.9,10.5,11.1,10.9,11,8.9,7.8,4.3
1918,4.6,6.7,6.7,10.1,11.6,11.1,11.2,10.8,10.9,10.2,7.7,5.5
1919,3.3,6.6,7.9,8.9,11.7,12.5,11.7,11.7,11.5,10.3,7.7,5.2
1920,4.2,6.9,9.1,11.1,10.4,11.3,11.8,11.3,11.3,9.7,7.4,4.8
1921,4.1,5.3,8.4,10.1,10.7,12.4,11.3,11.3,11.4,8.6,7,5
1922,5.4,6.8,8.7,10.8,12,11.2,11.3,11.4,11.6,9.2,7.6,5.1
1923,5.1,6.3,8.3,10.5,12.3,12.4,11.4,11.3,12.2,9.7,7,5.4
1924,4.8,5.8,9.4,10.5,10.8,12.1,11.6,11.4,10.9,9.1,5.9,5.1
1925,4.4,5.6,7.3,9.5,9.8,11.2,11.1,11.2,11.4,10.3,7,3.9
1926,4.6,4.8,8.3,8.7,9.8,12.8,13.1,12.7,11.7,10.3,4.9,3.6
1927,1.9,5.6,7.5,8.9,11.4,13.5,11.3,11.2,10.8,9.8,6.4,5.8
1928,4.1,5.8,7.8,9.5,11.6,12.1,11.3,11,11.4,9.4,6.5,3.1
1929,3.6,5.9,7.9,10,9.6,11.4,10.9,10.4,11.1,9.8,7.7,6
1930,5.3,6.1,9.2,7.8,9.7,11.4,10.4,9.3,11.6,9.7,5.7,4
1931,3.9,6.6,7.5,8.2,11.2,10.7,11.9,11.4,11.4,9.2,5.5,5.1
1932,4,6,7,8.6,10.9,11.7,10.9,12,11.9,9.3,3.8,3.8
1933,6.9,7.4,7.9,10,11.3,11.1,12.9,12.5,11,10,5.9,4.6
1934,5.5,7,9.1,8.7,10.3,12.4,12.2,11.6,11.8,9,6.3,4.7
1935,2.2,5.2,7.5,9.4,11.9,12.3,11.9,12.8,11.4,9.7,5.6,3.5
1936,4.6,6.4,10,9.7,9.8,12.7,13.8,11.9,12.3,10.3,6.8,3.4
1937,5.1,7.2,8.1,11.2,11.2,12.2,12.2,11.5,12.1,9.9,5.6,4.6
1938,4.3,6.3,9,10.1,11.5,12.4,12.5,11.5,11.2,8.5,6.7,2.6
1939,4.5,6.5,8.3,10.4,12.2,12.5,11.5,12.1,11,10,4.8,4
1940,3.4,6.5,7.4,12.8,14.2,12.8,12.4,12.7,11.2,9.3,7.6,4.5
1941,5.1,7,9.8,13.5,12.4,15.2,14,13.8,13.3,12.1,9.3,7.1
1942,5.4,8.6,9.3,12.5,13.9,14.5,13,13,12.1,10.9,8.1,6.3
1943,6.1,5.6,9.7,11.8,14.4,13.8,12.8,14.5,13.5,10.3,7,5.8
1944,5.3,8.6,12.2,11.9,13.7,14.6,14,13.3,14.2,9.5,8.9,6
1945,5.6,9.3,11.7,12.1,12.2,13.4,14.2,13,12.4,10.9,7.9,5.4
1946,5.6,8.1,8.8,10.3,11.2,12.2,10.5,12.8,12.5,10.7,8.9,5.4
1947,6.6,6.9,10.9,12.9,13.6,14.4,11.9,12.9,11.5,11.4,9.5,6.6
1948,6.2,9.2,11.5,11.3,12.7,13.3,12.5,13,13.1,11.5,10.2,6.6
1949,6.1,9.2,10.1,11.7,13.4,14.3,13.5,12.6,12.2,12.6,6,6.6
1950,6.7,7.9,9.2,11.3,13.1,13.1,12.8,11.5,13.1,9.8,6.5,3.4
1951,4.6,5.5,8.8,10.9,11.5,13.2,11.9,11.9,12.5,9.9,7.7,6.2
1952,6.5,7.2,10.2,11,11.4,12.7,11.9,11.6,11.7,6.8,8.4,4.7
1953,4,6.9,10.2,11.5,11.9,13.2,12,11.8,12,10.4,6.4,5.4
1954,5.4,6.3,8.6,9.7,11.4,13,12.2,11.6,11.7,10,7,4.6
1955,6,6.1,9.1,11.9,12.1,13.2,12.7,12.5,11.9,9.4,8,5.5
1956,4.9,7.4,9.3,11.1,12,12.6,11.6,11.6,11.5,10.1,8.1,7
1957,6.8,10,9.9,12,13.2,13.4,12.9,12.4,11.9,10.2,7.9,6.2
1958,6.3,7.9,10.3,12.4,12.4,14.2,13.1,12.7,13,12.8,10.4,8.4
1959,7.1,9.3,10.6,11.9,12.7,14,12.5,12.2,12.6,11.9,8.6,6.3
1960,7.3,6.4,9,10.1,12.4,13.5,13.5,12.9,12.7,12,9.1,7.2
1961,6.6,6.7,10.5,11.1,12,13.3,12.3,11.7,12,9.3,9,6.8
1962,5.6,7.6,9.6,10.9,11.9,12.9,12.3,12.5,12.6,10.8,7.1,7.2
1963,6.1,5.6,10.8,11.6,12.2,13.7,13,12.2,12.9,9.7,7.9,6.6
1964,7.3,8.3,10.6,11.7,12.4,13.2,12.6,11.8,12.8,8.7,8.3,6.6
1965,6.4,7.2,9,11,12.7,13.4,12.1,11.9,12.2,10.5,8.1,7.8
1966,6.6,7.7,9.7,12,12.7,13.4,12.6,12.1,11.9,10.9,6.3,5
1967,5.6,6.5,9.8,11,12.1,13,11.4,11.3,12,10,7.7,7
1968,6.4,6.2,8.1,11,12.6,13.1,12,11.4,12.3,10.3,8,6.8
1969,6.5,9.1,10.2,11.8,12.7,13.4,12.7,13,13.5,10.5,7.4,6.4
1970,5.7,7.3,9,12,11.2,13,12,12.3,12.4,10.4,5.9,4.9
1971,6.6,5.8,9.3,10,11.9,12.5,11.3,11.4,11.9,11,8,6.5
1972,6.4,6.6,10.2,11.9,12.6,13,12,11.5,12.2,10.4,10.1,6.6
1973,6.2,7.5,10.1,12.3,12.8,13.6,12.6,12.6,12.4,11,8.7,5.1
1974,6.6,6.1,9.1,11,12.4,13.6,11.7,10.5,12.6,9,7.4,6.8
1975,4.5,7.6,10.1,11.5,12.5,13.1,11.8,12.2,11.9,10.9,7.1,5.7
1976,5.6,6,9.2,11.1,11.7,12.4,12.1,11.5,12.1,11.1,9.5,6.7
1977,5,7.1,8.5,9.9,11.5,12,10.9,12.1,11.6,10.5,8.4,6.3
1978,5.8,6.8,8.4,11.4,12.1,13.2,12.2,12.1,11.8,10.4,9.6,7.2
1979,4.4,7.1,9.3,11.5,11.7,12.3,11.6,12.3,12.2,10.4,8.3,6.4
1980,6.6,6.3,9.5,11.2,12.8,12.2,11.8,11.8,12.1,10.5,7.5,4.8
1981,5.3,7.3,10.9,11.1,12.4,14.2,12.5,13.8,12.3,12,7.6,7.4
1982,7.1,8.5,10,11.9,12.8,12.7,12.6,11.7,12.5,11.4,8.3,6.8
1983,6.4,6,9.4,10.1,12.8,13.1,13.4,13,12.9,11.3,10.7,7.7
1984,6.5,8.1,9.8,12.3,11.9,12.7,12.3,12.3,12.9,11.2,7.1,6.3
1985,6.6,7.2,10.4,10.9,12,13,12,12,11.1,11.2,8.7,6.8
1986,5,7.4,8.1,10.3,12.3,12.7,11.6,10.7,11.9,11.1,9.9,6.4
1987,4.6,7.8,8.8,10.1,11.2,13.3,12.3,12.1,11.2,9.4,8.6,6.1
1988,5.5,7.3,9.6,11.2,11.4,12.1,11.9,13,12.4,10,7.8,5.8
1989,6.1,6.2,8,9.7,12,13,12,12.2,12.1,8.9,8.6,5.8
1990,6.2,8,9.3,10.6,12.4,12.5,11.9,11.8,12.2,11.3,9.1,6
1991,6.8,7.1,9.4,10.6,12.3,13.2,13,11.7,11.6,10.7,7.9,7.3
1992,7.5,6.3,10.8,11.5,12.6,12.9,11.6,11.7,12.1,10.7,9,6.8
1993,6.7,8,9.5,10.9,11.4,12.6,11.5,11.9,12.7,10.4,7.2,5.4
1994,6,7.2,9.3,10.4,12.5,12.8,11.3,11.1,11.2,10.6,8.1,7.4
1995,7.8,8.3,10.2,11.6,13.4,13.5,12.3,13.9,12.2,10.2,9.1,7.1
1996,4.3,6.4,9.3,10.6,12.6,12.6,12,12.4,12.4,11.6,7.9,6.6
1997,5.6,7.9,10.8,11.9,12.6,12.7,12.1,12.3,12.4,11.7,10.6,6.1
1998,6.4,7.2,9,11.2,11,12.6,12.2,12.7,13.6,12.4,10.7,5.9
1999,6.7,8.2,10.3,12.6,12.7,13.6,11.8,12.4,11.7,9.7,7,5.4
2000,6.3,7.7,10.6,11,12.1,12.5,12.2,11.8,11.6,11.2,9.2,6
2001,6.5,8.5,10.1,11.5,11.3,12.3,12,11.5,12,10.7,8.2,6.7
2002,6.4,7.2,9.4,11.6,12.1,13.2,12.2,11.7,12.1,11.7,8.3,6.1
2003,6.8,6.5,10.5,11.3,13.1,12.9,12.5,13,13.5,10.7,8.2,4.6
2004,6.3,6.8,10.6,11.5,12,12.8,12.6,13.3,12.1,11.8,8.4,5.5
2005,6.6,8.7,9.5,13.2,12.3,13.5,12.7,11.2,12,11.2,8.4,6
2006,5.7,7,10,12.4,11.3,13,11.7,12.9,12.1,12,7.8,6.3
2007,7.7,7.4,10.2,11.8,12,13.6,12.7,12.3,12.5,9.7,7.5,7.3
2008,6.8,8,9.7,10.9,12.8,12.4,12.1,13.2,12.4,9.9,7.4,6
2009,6.4,8,10.5,12.1,11.8,13.7,13.4,13.5,12.5,12.3,8.4,6.8
